Possible logic issue with unreachable code

[ambientlight]

Was looking into subscriptions and found this:

https://github.com/graphql-python/graphql-core/blob/9333075c657e91e563c09add8464f3758e317749/graphql/execution/executor.py#L306-L312

The desired intention here is merging field subscriptions into single observable?

[ekampf]

It does like like return observable shouldn't be there.

[Cito]

The reason for this is probably that the whole code is only tested and functional when there is only one field anyway. I have now made the code more clear in this regard.

Closing this here. If anybody wants to solve this properly, this is still open as #194.